Apparatus for casting hollow bodies in chill molds rotatable about vertical axes



April 18, 1933. A. KEUP APPARATUS FOR CASTING HOLLOW BODIES IN CHILLHOLDS ROTATABLE ABOUT VERTICAL AXES Filed July 17, 1931 fiw M T N m N IPatented Apr. I8, 1933 i r I UNITED STATES PATENT OFFICE.

ALBERT KLEUP, OI GELSENKIROHEN, GERMANY APPARATUS FOR CASTING HOLLOWBODIES CHILL HOLDS BOTATABLE ABOUT VERTICAL AXES Application filed July17, 1981, Serial No. 551,497, and in Germany December 10, 1980.-

This invention is for a method and a In order that the invention may befully paratus for casting hollow bodies in Chlll understood, referenceis directed to the acmolds rotatable about vertical axes. companylngdrawing in which In the production of hollow bodies by Figure 1 is avertical section-ofa chill 5 casting in chill molds rotating aboutvertical mold'constructed for carrying the 'method 50 y axes, it isusual to pour the molten metal according to the invention into effect,and into the mold so that it falls onto the bottom Figure 2 illustratesin plan the base plate thereof and thereafter rises up the walls due ofthe mold shown in Figure 1.

to centrifugal action as the mold rotates. Referring to the drawing, thechill mold 1 This method produces various faults in the is providehollow bodies so cast,-particularly when the plate a in the center ofwhich a recess is same are of relativel large diameter and ormedarranged to receive a member 6 great height. These aults are produced byformed of refractory material. The member the stream of molten metal, asit is poured b has a recess formed therein which cominto the mold,striking the bottom thereof municates at its lower endwith a series of00 and splashing upwardly on to the walls, reradially disposed channelsas illustrated in sulting in the production of scales and flakesFigure 1. The recess in the member I) is of a, on the outer surface ofthe hollow body configuration such as that illustrated in Figwhich, inmany instances, makes an extensive ure 1 which ensures that molten metalpoured subsequent treatment necessar before the thereinto is notsplashed upwards on to the 65 body can be rolled or forged. oreover, bywalls of the mold. A downward depression the method described, thebottom of the chill-- is provided inthe member I) opposite to the moldis subjected to relatively heavy wear 'lower open end of the recesstherein where by the falling of the molten metal thereon. the samecommunicates with the radially dis- This invention comprise a method ofcastposed channels.

ing hollow bodies in a chill mold rotating A radially disposedrefractory member 0 about a vertical axis which consists in inis locatedin a recess in the upper surface of troducing molten metal into the baseof the the plate a adjacent to each of the radially rotating mold wherethe flow of metal into disposed channels in the member 6 and is theupper part of the mold is controlled in provided with a conduit arrangedin comsuch a manner that the metal moves into munication with the saidchannel. The concontact with the walls of the mold solely (hit isdirected upwardly so as to open into as an annular mass rising from thebottom the mold adjacent to the inner wall thereof.

of the mold. 4 The chill mold above described is cm- In a suitableapparatus for carrying the ployed as follows method according to theinvention into ef- -Molten metal is poured in the mold as feet, the baseof a chill mold is constructed it rotates so, as to fall within therecess in in the form of a plate provided with a centhe member I) fromwhence it flows through tral recess arranged to receive metal poured theradially disposed channels in the said into the mold, and prevent itfrom being member and through the conduits in the splashed up on to thewalls of the mold, the members 0 and thence upwardly into the platebeing constructed so as to distribute mold so as to effect the castingof a hollow the metal rom the recess in an upward dibody therein. Itwill be appreciated that rection adjacent to' the inner walls of the thecentrifugal action developed during the 90 mold. rotation of the moldcauses all the molten with an interchangeable ,base 55' I metalintroduced into the recess in the mem-- ber 12 to be carried through theradial channels therein and thence through the conduits in the members ainto the mold, and

I the speed of rotation of the mold may be regulated as desired so as toroduce the desired flow of the metal into t e mold. Progressive stagesof the flow of the molten metal 71 wardly into the chill mold areindicated 10 in otted lines in Figure 1.

The flow of the metal through the con duits into the mold is efi'ecteduniformly and .smoothl without causin the metal to be splashe on to thewalls the mold and the 1 hollow body reduced is thus' free from thescales and fla es on the outer surface which are produced by knownmethods. The castin is thus in condition to be rolled or forged WlthOlltany supplementar reparation.

- The refractory nature 0 e members 6 and c prevents the blocking of thechannels in the conduits therein by solidified metal and it will beappreciated that if the members b and c'become worn they may be readilyreplaced.

I claim:

1. A casting mold for casting hollow bodies by vertical centrifugalcastlng comprising a replaceable bottom having a recessed -central blockprovided with a plurality of channels leading from said recess and aplurality of channel blocks arranged about said central block and havingpassageways therein communicating with the channels of said centralblock to conduct metal from the recess of said central block into themold.

2. A casting mold according to claim 1 having a recessed central blockthe upper portion of which recess is shaped to fit the inwardly flowingcasting jet.

In testimony whereof I have signed my name to this specification. ALBERTKEUP.

